#include<stdio.h>
#include<unistd.h>

int main()
{
  pid_t id=fork();
  if(id==0)
  {
    //child
    while(1)
    {
      printf("我是子进程：pid：%d，ppid：%d\n",getpid(),getppid());
      sleep(1);
    } 
  }
  else{
    //parent
    int cot = 10;
    while(1)
    {
      printf("我是父进程：pid：%d，ppid：%d\n",getpid(),getppid());
      sleep(1);
      if(cot-- <= 0)
        break;
    }
  }
  return 0;
}
